Mercurial > hg > graal-compiler
view src/share/vm/prims/jvmtiEnvBase.hpp @ 13000:209aa13ab8c0
8024927: Nashorn performance regression with CompressedOops
Summary: Allocate compressed class space at end of Java heap. For small heap sizes, without CDS, save some space so compressed classes can have the same favorable compression as oops
Reviewed-by: stefank, hseigel, goetz
author | coleenp |
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date | Fri, 25 Oct 2013 15:19:29 -0400 |
parents | c1d7040a1183 |
children | de6a9e811145 |
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/* * Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ #ifndef SHARE_VM_PRIMS_JVMTIENVBASE_HPP #define SHARE_VM_PRIMS_JVMTIENVBASE_HPP #include "classfile/classLoader.hpp" #include "prims/jvmtiEnvThreadState.hpp" #include "prims/jvmtiEventController.hpp" #include "prims/jvmtiThreadState.hpp" #include "runtime/fieldDescriptor.hpp" #include "runtime/frame.hpp" #include "runtime/handles.inline.hpp" #include "runtime/thread.hpp" #include "runtime/vm_operations.hpp" #include "utilities/growableArray.hpp" #include "utilities/macros.hpp" // // Forward Declarations // class JvmtiEnv; class JvmtiThreadState; class JvmtiRawMonitor; // for jvmtiEnv.hpp class JvmtiEventControllerPrivate; class JvmtiTagMap; // One JvmtiEnv object is created per jvmti attachment; // done via JNI GetEnv() call. Multiple attachments are // allowed in jvmti. class JvmtiEnvBase : public CHeapObj<mtInternal> { private: #if INCLUDE_JVMTI static JvmtiEnvBase* _head_environment; // head of environment list #endif // INCLUDE_JVMTI static bool _globally_initialized; static jvmtiPhase _phase; static volatile int _dying_thread_env_iteration_count; public: enum { JDK15_JVMTI_VERSION = JVMTI_VERSION_1_0 + 33, /* version: 1.0.33 */ JDK16_JVMTI_VERSION = JVMTI_VERSION_1_1 + 102, /* version: 1.1.102 */ JDK17_JVMTI_VERSION = JVMTI_VERSION_1_2 + 2 /* version: 1.2.2 */ }; static jvmtiPhase get_phase() { return _phase; } static void set_phase(jvmtiPhase phase) { _phase = phase; } static bool is_vm_live() { return _phase == JVMTI_PHASE_LIVE; } static void entering_dying_thread_env_iteration() { ++_dying_thread_env_iteration_count; } static void leaving_dying_thread_env_iteration() { --_dying_thread_env_iteration_count; } static bool is_inside_dying_thread_env_iteration(){ return _dying_thread_env_iteration_count > 0; } private: enum { JVMTI_MAGIC = 0x71EE, DISPOSED_MAGIC = 0xDEFC, BAD_MAGIC = 0xDEAD }; jvmtiEnv _jvmti_external; jint _magic; jint _version; // version value passed to JNI GetEnv() JvmtiEnvBase* _next; bool _is_retransformable; const void *_env_local_storage; // per env agent allocated data. jvmtiEventCallbacks _event_callbacks; jvmtiExtEventCallbacks _ext_event_callbacks; JvmtiTagMap* _tag_map; JvmtiEnvEventEnable _env_event_enable; jvmtiCapabilities _current_capabilities; jvmtiCapabilities _prohibited_capabilities; volatile bool _class_file_load_hook_ever_enabled; static volatile bool _needs_clean_up; char** _native_method_prefixes; int _native_method_prefix_count; protected: JvmtiEnvBase(jint version); ~JvmtiEnvBase(); void dispose(); void env_dispose(); void set_env_local_storage(const void* data) { _env_local_storage = data; } const void* get_env_local_storage() { return _env_local_storage; } void record_class_file_load_hook_enabled(); void record_first_time_class_file_load_hook_enabled(); char** get_native_method_prefixes() { return _native_method_prefixes; } int get_native_method_prefix_count() { return _native_method_prefix_count; } jvmtiError set_native_method_prefixes(jint prefix_count, char** prefixes); private: friend class JvmtiEventControllerPrivate; void initialize(); void set_event_callbacks(const jvmtiEventCallbacks* callbacks, jint size_of_callbacks); static void globally_initialize(); static void periodic_clean_up(); friend class JvmtiEnvIterator; JvmtiEnv* next_environment() { return (JvmtiEnv*)_next; } void set_next_environment(JvmtiEnvBase* env) { _next = env; } static JvmtiEnv* head_environment() { JVMTI_ONLY(return (JvmtiEnv*)_head_environment); NOT_JVMTI(return NULL); } public: bool is_valid(); bool use_version_1_0_semantics(); // agent asked for version 1.0 bool use_version_1_1_semantics(); // agent asked for version 1.1 bool use_version_1_2_semantics(); // agent asked for version 1.2 bool is_retransformable() { return _is_retransformable; } static ByteSize jvmti_external_offset() { return byte_offset_of(JvmtiEnvBase, _jvmti_external); }; static JvmtiEnv* JvmtiEnv_from_jvmti_env(jvmtiEnv *env) { return (JvmtiEnv*)((intptr_t)env - in_bytes(jvmti_external_offset())); }; jvmtiCapabilities *get_capabilities() { return &_current_capabilities; } jvmtiCapabilities *get_prohibited_capabilities() { return &_prohibited_capabilities; } static char** get_all_native_method_prefixes(int* count_ptr); // This test will answer true when all environments have been disposed and some have // not yet been deallocated. As a result, this test should only be used as an // optimization for the no environment case. static bool environments_might_exist() { return head_environment() != NULL; } static void check_for_periodic_clean_up(); JvmtiEnvEventEnable *env_event_enable() { return &_env_event_enable; } jvmtiError allocate(jlong size, unsigned char** mem_ptr) { if (size < 0) { return JVMTI_ERROR_ILLEGAL_ARGUMENT; } if (size == 0) { *mem_ptr = NULL; } else { *mem_ptr = (unsigned char *)os::malloc((size_t)size, mtInternal); if (*mem_ptr == NULL) { return JVMTI_ERROR_OUT_OF_MEMORY; } } return JVMTI_ERROR_NONE; } jvmtiError deallocate(unsigned char* mem) { if (mem != NULL) { os::free(mem, mtInternal); } return JVMTI_ERROR_NONE; } // Memory functions unsigned char* jvmtiMalloc(jlong size); // don't use this - call allocate // method to create a local handle jobject jni_reference(Handle hndl) { return JNIHandles::make_local(hndl()); } // method to create a local handle. // This function allows caller to specify which // threads local handle table to use. jobject jni_reference(JavaThread *thread, Handle hndl) { return JNIHandles::make_local(thread, hndl()); } // method to destroy a local handle void destroy_jni_reference(jobject jobj) { JNIHandles::destroy_local(jobj); } // method to destroy a local handle. // This function allows caller to specify which // threads local handle table to use although currently it is // not used. void destroy_jni_reference(JavaThread *thread, jobject jobj) { destroy_jni_reference(jobj); } jvmtiEnv* jvmti_external() { return &_jvmti_external; }; // Event Dispatch bool has_callback(jvmtiEvent event_type) { assert(event_type >= JVMTI_MIN_EVENT_TYPE_VAL && event_type <= JVMTI_MAX_EVENT_TYPE_VAL, "checking"); return ((void**)&_event_callbacks)[event_type-JVMTI_MIN_EVENT_TYPE_VAL] != NULL; } jvmtiEventCallbacks* callbacks() { return &_event_callbacks; } jvmtiExtEventCallbacks* ext_callbacks() { return &_ext_event_callbacks; } void set_tag_map(JvmtiTagMap* tag_map) { _tag_map = tag_map; } JvmtiTagMap* tag_map() { return _tag_map; } // return true if event is enabled globally or for any thread // True only if there is a callback for it. bool is_enabled(jvmtiEvent event_type) { return _env_event_enable.is_enabled(event_type); } // Random Utilities protected: // helper methods for creating arrays of global JNI Handles from local Handles // allocated into environment specific storage jobject * new_jobjectArray(int length, Handle *handles); jthread * new_jthreadArray(int length, Handle *handles); jthreadGroup * new_jthreadGroupArray(int length, Handle *handles); // convert from JNIHandle to JavaThread * JavaThread * get_JavaThread(jthread jni_thread); // convert to a jni jclass from a non-null Klass* jclass get_jni_class_non_null(Klass* k); jint count_locked_objects(JavaThread *java_thread, Handle hobj); jvmtiError get_locked_objects_in_frame(JavaThread *calling_thread, JavaThread* java_thread, javaVFrame *jvf, GrowableArray<jvmtiMonitorStackDepthInfo*>* owned_monitors_list, jint depth); vframe* vframeFor(JavaThread* java_thread, jint depth); public: // get a field descriptor for the specified class and field static bool get_field_descriptor(Klass* k, jfieldID field, fieldDescriptor* fd); // test for suspend - most (all?) of these should go away static bool is_thread_fully_suspended(JavaThread *thread, bool wait_for_suspend, uint32_t *bits); // JVMTI API helper functions which are called at safepoint or thread is suspended. jvmtiError get_frame_count(JvmtiThreadState *state, jint *count_ptr); jvmtiError get_frame_location(JavaThread* java_thread, jint depth, jmethodID* method_ptr, jlocation* location_ptr); jvmtiError get_object_monitor_usage(JavaThread *calling_thread, jobject object, jvmtiMonitorUsage* info_ptr); jvmtiError get_stack_trace(JavaThread *java_thread, jint stack_depth, jint max_count, jvmtiFrameInfo* frame_buffer, jint* count_ptr); jvmtiError get_current_contended_monitor(JavaThread *calling_thread, JavaThread *java_thread, jobject *monitor_ptr); jvmtiError get_owned_monitors(JavaThread *calling_thread, JavaThread* java_thread, GrowableArray<jvmtiMonitorStackDepthInfo*> *owned_monitors_list); jvmtiError check_top_frame(JavaThread* current_thread, JavaThread* java_thread, jvalue value, TosState tos, Handle* ret_ob_h); jvmtiError force_early_return(JavaThread* java_thread, jvalue value, TosState tos); }; // This class is the only safe means of iterating through environments. // Note that this iteratation includes invalid environments pending // deallocation -- in fact, some uses depend on this behavior. class JvmtiEnvIterator : public StackObj { private: bool _entry_was_marked; public: JvmtiEnvIterator() { if (Threads::number_of_threads() == 0) { _entry_was_marked = false; // we are single-threaded, no need } else { Thread::current()->entering_jvmti_env_iteration(); _entry_was_marked = true; } } ~JvmtiEnvIterator() { if (_entry_was_marked) { Thread::current()->leaving_jvmti_env_iteration(); } } JvmtiEnv* first() { return JvmtiEnvBase::head_environment(); } JvmtiEnv* next(JvmtiEnvBase* env) { return env->next_environment(); } }; // VM operation to get monitor information with stack depth. class VM_GetOwnedMonitorInfo : public VM_Operation { private: JvmtiEnv *_env; JavaThread* _calling_thread; JavaThread *_java_thread; jvmtiError _result; GrowableArray<jvmtiMonitorStackDepthInfo*> *_owned_monitors_list; public: VM_GetOwnedMonitorInfo(JvmtiEnv* env, JavaThread* calling_thread, JavaThread* java_thread, GrowableArray<jvmtiMonitorStackDepthInfo*>* owned_monitor_list) { _env = env; _calling_thread = calling_thread; _java_thread = java_thread; _owned_monitors_list = owned_monitor_list; _result = JVMTI_ERROR_NONE; } VMOp_Type type() const { return VMOp_GetOwnedMonitorInfo; } void doit() { ((JvmtiEnvBase *)_env)->get_owned_monitors(_calling_thread, _java_thread, _owned_monitors_list); } jvmtiError result() { return _result; } }; // VM operation to get object monitor usage. class VM_GetObjectMonitorUsage : public VM_Operation { private: JvmtiEnv *_env; jobject _object; JavaThread* _calling_thread; jvmtiMonitorUsage* _info_ptr; jvmtiError _result; public: VM_GetObjectMonitorUsage(JvmtiEnv *env, JavaThread* calling_thread, jobject object, jvmtiMonitorUsage* info_ptr) { _env = env; _object = object; _calling_thread = calling_thread; _info_ptr = info_ptr; } VMOp_Type type() const { return VMOp_GetObjectMonitorUsage; } jvmtiError result() { return _result; } void doit() { _result = ((JvmtiEnvBase*) _env)->get_object_monitor_usage(_calling_thread, _object, _info_ptr); } }; // VM operation to get current contended monitor. class VM_GetCurrentContendedMonitor : public VM_Operation { private: JvmtiEnv *_env; JavaThread *_calling_thread; JavaThread *_java_thread; jobject *_owned_monitor_ptr; jvmtiError _result; public: VM_GetCurrentContendedMonitor(JvmtiEnv *env, JavaThread *calling_thread, JavaThread *java_thread, jobject *mon_ptr) { _env = env; _calling_thread = calling_thread; _java_thread = java_thread; _owned_monitor_ptr = mon_ptr; } VMOp_Type type() const { return VMOp_GetCurrentContendedMonitor; } jvmtiError result() { return _result; } void doit() { _result = JVMTI_ERROR_THREAD_NOT_ALIVE; if (Threads::includes(_java_thread) && !_java_thread->is_exiting() && _java_thread->threadObj() != NULL) { _result = ((JvmtiEnvBase *)_env)->get_current_contended_monitor(_calling_thread,_java_thread,_owned_monitor_ptr); } } }; // VM operation to get stack trace at safepoint. class VM_GetStackTrace : public VM_Operation { private: JvmtiEnv *_env; JavaThread *_java_thread; jint _start_depth; jint _max_count; jvmtiFrameInfo *_frame_buffer; jint *_count_ptr; jvmtiError _result; public: VM_GetStackTrace(JvmtiEnv *env, JavaThread *java_thread, jint start_depth, jint max_count, jvmtiFrameInfo* frame_buffer, jint* count_ptr) { _env = env; _java_thread = java_thread; _start_depth = start_depth; _max_count = max_count; _frame_buffer = frame_buffer; _count_ptr = count_ptr; } jvmtiError result() { return _result; } VMOp_Type type() const { return VMOp_GetStackTrace; } void doit() { _result = ((JvmtiEnvBase *)_env)->get_stack_trace(_java_thread, _start_depth, _max_count, _frame_buffer, _count_ptr); } }; // forward declaration struct StackInfoNode; // VM operation to get stack trace at safepoint. class VM_GetMultipleStackTraces : public VM_Operation { private: JvmtiEnv *_env; jint _max_frame_count; jvmtiStackInfo *_stack_info; jvmtiError _result; int _frame_count_total; struct StackInfoNode *_head; JvmtiEnvBase *env() { return (JvmtiEnvBase *)_env; } jint max_frame_count() { return _max_frame_count; } struct StackInfoNode *head() { return _head; } void set_head(StackInfoNode *head) { _head = head; } protected: void set_result(jvmtiError result) { _result = result; } void fill_frames(jthread jt, JavaThread *thr, oop thread_oop); void allocate_and_fill_stacks(jint thread_count); public: VM_GetMultipleStackTraces(JvmtiEnv *env, jint max_frame_count) { _env = env; _max_frame_count = max_frame_count; _frame_count_total = 0; _head = NULL; _result = JVMTI_ERROR_NONE; } VMOp_Type type() const { return VMOp_GetMultipleStackTraces; } jvmtiStackInfo *stack_info() { return _stack_info; } jvmtiError result() { return _result; } }; // VM operation to get stack trace at safepoint. class VM_GetAllStackTraces : public VM_GetMultipleStackTraces { private: JavaThread *_calling_thread; jint _final_thread_count; public: VM_GetAllStackTraces(JvmtiEnv *env, JavaThread *calling_thread, jint max_frame_count) : VM_GetMultipleStackTraces(env, max_frame_count) { _calling_thread = calling_thread; } VMOp_Type type() const { return VMOp_GetAllStackTraces; } void doit(); jint final_thread_count() { return _final_thread_count; } }; // VM operation to get stack trace at safepoint. class VM_GetThreadListStackTraces : public VM_GetMultipleStackTraces { private: jint _thread_count; const jthread* _thread_list; public: VM_GetThreadListStackTraces(JvmtiEnv *env, jint thread_count, const jthread* thread_list, jint max_frame_count) : VM_GetMultipleStackTraces(env, max_frame_count) { _thread_count = thread_count; _thread_list = thread_list; } VMOp_Type type() const { return VMOp_GetThreadListStackTraces; } void doit(); }; // VM operation to count stack frames at safepoint. class VM_GetFrameCount : public VM_Operation { private: JvmtiEnv *_env; JvmtiThreadState *_state; jint *_count_ptr; jvmtiError _result; public: VM_GetFrameCount(JvmtiEnv *env, JvmtiThreadState *state, jint *count_ptr) { _env = env; _state = state; _count_ptr = count_ptr; } VMOp_Type type() const { return VMOp_GetFrameCount; } jvmtiError result() { return _result; } void doit() { _result = ((JvmtiEnvBase*)_env)->get_frame_count(_state, _count_ptr); } }; // VM operation to frame location at safepoint. class VM_GetFrameLocation : public VM_Operation { private: JvmtiEnv *_env; JavaThread* _java_thread; jint _depth; jmethodID* _method_ptr; jlocation* _location_ptr; jvmtiError _result; public: VM_GetFrameLocation(JvmtiEnv *env, JavaThread* java_thread, jint depth, jmethodID* method_ptr, jlocation* location_ptr) { _env = env; _java_thread = java_thread; _depth = depth; _method_ptr = method_ptr; _location_ptr = location_ptr; } VMOp_Type type() const { return VMOp_GetFrameLocation; } jvmtiError result() { return _result; } void doit() { _result = ((JvmtiEnvBase*)_env)->get_frame_location(_java_thread, _depth, _method_ptr, _location_ptr); } }; // ResourceTracker // // ResourceTracker works a little like a ResourceMark. All allocates // using the resource tracker are recorded. If an allocate using the // resource tracker fails the destructor will free any resources // that were allocated using the tracker. // The motive for this class is to avoid messy error recovery code // in situations where multiple allocations are done in sequence. If // the second or subsequent allocation fails it avoids any code to // release memory allocated in the previous calls. // // Usage :- // ResourceTracker rt(env); // : // err = rt.allocate(1024, &ptr); class ResourceTracker : public StackObj { private: JvmtiEnv* _env; GrowableArray<unsigned char*> *_allocations; bool _failed; public: ResourceTracker(JvmtiEnv* env); ~ResourceTracker(); jvmtiError allocate(jlong size, unsigned char** mem_ptr); unsigned char* allocate(jlong size); char* strdup(const char* str); }; // Jvmti monitor closure to collect off stack monitors. class JvmtiMonitorClosure: public MonitorClosure { private: JavaThread *_java_thread; JavaThread *_calling_thread; GrowableArray<jvmtiMonitorStackDepthInfo*> *_owned_monitors_list; jvmtiError _error; JvmtiEnvBase *_env; public: JvmtiMonitorClosure(JavaThread* thread, JavaThread *calling_thread, GrowableArray<jvmtiMonitorStackDepthInfo*> *owned_monitors, JvmtiEnvBase *env) { _java_thread = thread; _calling_thread = calling_thread; _owned_monitors_list = owned_monitors; _error = JVMTI_ERROR_NONE; _env = env; } void do_monitor(ObjectMonitor* mon); jvmtiError error() { return _error;} }; #endif // SHARE_VM_PRIMS_JVMTIENVBASE_HPP